Search results for "DF"
showing 10 items of 1699 documents
MOF derivatives as cage for alkali-metal azides: a DFT study
2012
Diagrammatisku vaicājumu veidošanas servisi tīmekļa vidē
2018
Mūsdienās ir aizvien vairāk gadījumu kad ir vajadzība strādāt ar datu bāzēm, pat ja lietotājs nav ļoti izglītots programmēšanā. Grafiskie vaicājumu veidošanas rīki var atvieglot vaicājumu formēšanas darbu. Viens no vizuālo vaicājumu rīkiem pār semantiskajām (RDF) datubāzēm ir ViziQuer, kas darbojas tīmekļa pārlūkā. Ir redzams, ka vizuālais vaicājumu noformējums var palīdzēt vaicājumu lasīšanā, taču lai atvieglotu arī vaicājumu formēšanu, ir nepieciešama arī gala lietotājam ērta vaicājumu veidošanas saskarne. Darbā tiks piedāvāti lietotāja saskarnes risinājumi, kas vērsti uz iespējami ērtu vizuālu vaicājumu veidošanu tīmekļa pārlūkā darbināmā rīkā. Paredzams, ka būs iespēja risinājumu protot…
Uncontrolled methane emissions from a MSW landfill surface: Influence of landfill features and side slopes
2013
Sanitary landfills for Municipal Solid Waste (MSW) disposal have been identified as one of the most important anthropogenic sources of methane (CH4) emissions; in order to minimize its negative effects on the environment, landfill gas (LFG) recovery is a suitable tool to control CH4 emissions from a landfill site; further, the measurement of CH4 emissions can represent a good way to evaluate the effectiveness of LFG recovering systems. In general, LFG will escape through any faults in the landfill capping or in the LFG collection system. Indeed, some areas of the capping can be more permeable than others (e.g. portions of a side slope), especially when considering a temporarily capped zone …
Evaluation of methane emissions from Palermo municipal landfill: Comparison between field measurements and models
2010
Methane (CH(4)) diffuse emissions from Municipal Solid Waste (MSW) landfills represent one of the most important anthropogenic sources of greenhouse gas. CH(4) is produced by anaerobic biodegradation of organic matter in landfilled MSW and constitutes a major component of landfill gas (LFG). Gas recovery is a suitable method to effectively control CH(4) emissions from landfill sites and the quantification of CH(4) emissions represents a good tool to evaluate the effectiveness of a gas recovery system in reducing LFG emissions. In particular, LFG emissions can indirectly be evaluated from mass balance equations between LFG production, recovery and oxidation in the landfill, as well as by a d…
Group-specific quantification of methanotrophs in landfill gas-purged laboratory biofilters by tyramide signal amplification-fluorescence in situ hyb…
2008
The aim of this study was to quantitatively analyse methanotrophs in two laboratory landfill biofilters at different biofilter depths and at temperatures which mimicked the boreal climatic conditions. Both biofilters were dominated by type I methanotrophs. The biofilter depth profiles showed that type I methanotrophs occurred in the upper layer, where relatively high O(2) and low CH(4) concentrations were present, whereas type II methanotrophs were mostly distributed in the zone with high CH(4) and low O(2) concentrations. The number of type I methanotrophic cells declined when the temperature was raised from 15 degrees C to 23 degrees C, but increased when lowered to 5 degrees C. A slight …
Investigation of a tunnel pasteurizer for “Nocellara del Belice” table olives processed according to the “Castelvetrano method”
2014
The influence of pasteurization temperature and time of treatment on the flesh firmness and the evolution of microbial communities was studied for table olives Cv. Nocellara del Belice, packed in glass jars and processed with a tunnel pasteurizer. The experiment was first carried out on the laboratory level in order to select the optimal combination of pasteurization time/temperature so as to obtain the proper balance between the consistency of the pulp and the microbiological quality of the final product. Pasteurization at industrial scale was then carried out in a tunnel pasteurizer applying the treatment at 75 °C for 8 min in the thermal center of the jars. Besides flesh firmness and mic…
Immunoglobulin M seropositivity for Toscana virus in a random population sample in Sicily.
2012
Summary Objectives High Toscana virus (TOSV) antibody seropositivity rates have been documented in the last decade, especially in the Mediterranean area. It is unclear if these rates are associated with a recent or past exposure to the virus. This is of importance, as primary infection can cause neurologic complications, especially in adults. The aim of the present study was to assess the current active TOSV circulation in western Sicily. Methods A cross-sectional seroprevalence study was conducted on 271 individuals aged 4–92 years, sampled from the general population of a small city. Each participant completed a self-administered questionnaire and provided serum, which was analyzed for th…
Seroprevalence of and risk factors for Toscana and Sicilian virus infection in a sample population of Sicily (Italy).
2011
Summary Objective The present study aimed to assess seroprevalence of and risk factors for Toscana (TOSV) and Sicilian (SFSV) virus infections in a sample of Sicilian subjects. Methods A cross-sectional seroepidemiological study was conducted on 271 individuals. Each participant completed a self-administrated questionnaire and provided a serum sample which was analyzed for the presence of IgG specific anti-TOSV and anti-SFSV viruses. Results Overall, 90 subjects (33.2%) were positive for TOSV IgG, 25 (9.2%) were positive for SFSV IgG and 11 (4%) were positive for both the viruses. A higher risk for TOSV seropositivity was found in participants who were older (adjOR = 1.02 per year; 95% CI =…
Strukturēto datu izmantošana tīmekļu lapās
2015
Strukturētie dati ir standartizēts veids, kā aprakstīt interneta resursa saturu mašīnlasāmā formā. Ja mājaslapa satur strukturētos datus, tad tādas meklētājprogrammas kā Google, Bing vai Yahoo! spēj lietotājam atgriezt daudz precīzāku un sīkāk atlasītu informāciju. Pašreiz ir vairākas iespējas (RDFa, mikrodati, mikroformāti) kā iekļaut strukturētus datus mājaslapu saturā. Katram no šo strukturēto datu tipiem ir savas priekšrocības un trūkumi, kas tiks apskatīti šī bakalaura darba ietvaros. Bakalaura darba pirmā daļa ir teorijas apskats par semantisko tīmekli, kas apskata kādā veidā semantiskais tīmeklis ir saistīts ar strukturētajiem datiem un kādēļ mūsdienās šī tēma zinātnieku un pētnieku …
Teràpia cognitiva basada en la consciència plena, aplicada a pacients oncològics
2016
espanolEn este estudio se pone a prueba la viabilidad de la Terapia Cognitiva basada en la Consciencia Plena para mejorar la calidad de vida y el bienestar de los pacientes de cancer. La muestra esta constituida por siete pacientes de cancer de mama de la Comunidad Valenciana de edades comprendidas entre los 40 y 68 anos. Las pacientes fueron evaluadas psicologicamente antes de participar en un taller en el que se ofrecieron 8 sesiones de Mindfulness siguiendo el protocolo propuesto por Segal et al. (2002).Una vez finalizado el taller, las pacientes fueron evaluadas de nuevo y se contrastaron los cambios acaecidos tras la participacion del programa. Los resultados muestran efectos directos …